Perkonigg, A., Pfister, H., Stein, M. B., Hoefler, M., Lieb, R., Maercker, A., & Wittchen, H. U. (2006). Longitudinal course of posttraumatic stress disorder and posttraumatic stress disorder symptoms in a community sample of adolescents and young adults. European Neuropsychopharmacology, 16(Suppl. 4), S453-S454.